The Sky Last Week October 29, 2017Weather & SkyKate St. John Sunset at the Roberto Clemente Bridge, Pittsburgh, 21 October 2017 (photo by Kate St.John) Last week the sky put on a show in Pittsburgh. Here are just a few of its moods, October 21 to 24, 2017. A clear blue sky with one colorful tree, Youghiogeny Bike Trail, 22 October 2017 (photo by Kate St. John) A double rainbow over Pittsburgh, 23 October 2017, 7:40am (photo by Kate St. John) Beautiful clouds over Schenley Park, 24 October 2017 (photo by Kate St. John)